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dma-buf/dma-resv: Respect num_fences when initializing the shared fence list.

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commit bf8975837dac156c33a4d15d46602700998cb6dd upstream.

We hardcode the maximum number of shared fences to 4, instead of
respecting num_fences. Use a minimum of 4, but more if num_fences
is higher.

This seems to have been an oversight when first implementing the
api.

Fixes: 04a5faa8cb ("reservation: update api and add some helpers")
Cc: <[email protected]> # v3.17+
Reported-by: Niranjana Vishwanathapura <[email protected]>
Signed-off-by: Maarten Lankhorst <[email protected]>
Reviewed-by: Thomas Hellström <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Maarten Lankhorst 2020-11-24 12:57:07 +01:00 • committed by Greg Kroah-Hartman
commit 383c60c16d
1 changed files with 1 additions and 1 deletions
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2
drivers/dma-buf/dma-resv.c
View file

@ -161,7 +161,7 @@ int dma_resv_reserve_shared(struct dma_resv *obj, unsigned int num_fences)
max = max(old->shared_count + num_fences,
old->shared_max * 2);
} else {
max = 4;
max = max(4ul, roundup_pow_of_two(num_fences));
}
new = dma_resv_list_alloc(max);